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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>文件阅览</title>
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</head>
<style>
    html,
    body {
        height: 100%;
        margin: 0;
        padding: 0;
        min-width: 1366px;
    }
    
    #handout_wrap_inner {
        height: 100%;
    }
    
    .fanhui {
        position: absolute;
        left: 30px;
        top: 50px;
    }
</style>

<body>
    <button class="layui-btn fanhui  layui-btn-normal" onclick="window.history.back(-1)">返回</button>
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</body>
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<script type="text/javascript">
    var id

    function huoquurl() {
        var index = window.location.href.lastIndexOf("?");
        idinfo = window.location.href.substring(index + 1, window.location.href.length);
        index = idinfo.lastIndexOf("=");
        var url = idinfo.substring(index + 1, window.location.href.length);
        return url
    }

    $('#handout_wrap_inner').media({
        width: '100%',
        height: '100%',
        autoplay: true,
        src: huoquurl(),
    });
</script>


</html>